The Active Buzzer is a compact sound-producing component with a built-in oscillator, allowing it to generate a continuous beep when power is applied. Unlike passive buzzers, it does not require any external signal or frequency input.

It supports multiple voltage ranges (3V, 5V, and 9V depending on the variant), making it suitable for various electronic and embedded applications. The buzzer is easy to use with Arduino and other microcontrollers, requiring only a simple HIGH signal to operate.

Due to its simplicity and reliability, it is widely used in alarm systems, notification devices, and DIY electronics projects.